How to use engine start and stop? How to use the engine start and stop correctly

1. Close the start and stop when the traffic is jammed. The stop-and-go road conditions are really not suitable for turning on the automatic start-stop, not to mention the engine shake caused by starting, it can also be ignored in terms of fuel-saving effect, because repeated start-stop not only increases fuel consumption, but also increases the burden on the engine, which makes the engine automatic start-stop technology born in order to save fuel a little embarrassing.

2. Close the start and stop of the uphill and downhill slopes. When the engine starts and stops on the ramp, it takes a little time for the engine to stop and start again, which means that the braking force cannot be provided in time, and the vehicle will slip when the brakes are released, and the danger will increase, so this function should be turned off when going up and down the slope. However, today's vehicles can detect ramps, and if the downhill slope is too steep and the uphill slope exceeds 12%, the automatic start and stop will be automatically closed.

3. Turn off the air conditioner when it is refrigerated. When the engine speed stops, in order to protect the battery, the air conditioner will also stop the refrigeration function, at this time it is just a blowing, the hot summer minutes in the car will be very hot, the engine will soon restart, which directly causes the engine to restart back and forth several times, it is really worth the loss.

4. Close the start and stop when wading. When the vehicle wades in the water, the speed is relatively low, at this time, once the brakes are stepped on, the automatic start and stop will intervene, and the engine will stop working, then the exhaust pipe is negative atmospheric pressure at this time, which will cause water to flow into the exhaust pipe, if it starts again, the engine is not far from scrapping.

5. Turn off the start and stop when parking at low speed. Although the start-stop technology of the vehicle will not start in the case of reverse gear, it is repeatedly in and out of the parking space several times, especially when reversing into the garage or entering the parking space, the vehicle encounters the engine stop when adjusting the distance, and each adjustment will start and stop once, which is really annoying and hurts the car.

Analysis of the working principle of the "start-stop system" The driver sits in the cockpit, the red light at the intersection in front of him lights up, and the driver presses the brake pedal and stops and disengages. At this time, the Start Stop system automatically detects: the engine is idling and there is no gear; The wheel speed sensor of the anti-lock system shows zero; The electronic battery sensor shows that there is enough energy for the next start. Full.

Engine start-stop use: As long as you press the brake pedal directly during driving, the engine will automatically turn off after the vehicle completely stops for two seconds, and the engine will remain closed if you keep pressing the brake pedal. As soon as you release the brakes or turn the steering wheel, the engine will automatically ignite again, and you can immediately step on the accelerator again to start, and the whole process is in D gear.

After the car starts, the automatic start-stop function of the car is turned on by default, and when the car presses the brakes when parking, the engine will turn off, and the engine will start when the accelerator is pressed again. In some manual transmission models, the car's computer will turn off the car's engine according to the driver's behavior such as pressing the clutch and hanging neutral.

The automatic start-stop function of the car is suitable for frequent and frequent start of the vehicle, the car waits for a long time for the red light, lacks width and avoids increasing unnecessary fuel consumption. In the case of the car reversing into storage, the automatic start-stop system can be turned off, so as to protect the car's engine.

The working principle of engine start-stop

A reinforced motor with an idle start-stop function is implanted in the traditional engine, so that the engine is completely extinguished and does not work when the car meets the idle stop conditions. When the whole vehicle needs to start and move forward, the idle start-stop motor system quickly responds to the driver's start command, quickly starts the engine, and connects instantaneously.

The power of the automatic transmission to shift gears comes from the transmission oil pump, and the oil pump is also required to continuously provide oil pressure to maintain the gear position, and when the engine is turned off, the oil pump no longer provides pressure, and the gear position cannot be maintained.

The gearbox of the start-stop system has an additional electronic oil pump, and when the engine is turned off, the main oil pump of the gearbox cannot provide pressure, and the electronic oil pump provides pressure so that the gearbox can maintain the gear.

The start-stop system works when the vehicle stops due to congestion or cross-guessing of the intersection. The driver presses the brake pedal and stops to change gears. At this time, the start-stop system automatically detects:

The engine is idling and there is no gear; The wheel speed sensor of the anti-lock braking system shows zero; The battery's electronic sensors show that there is enough energy for the next start. When these three conditions are met, the engine automatically stops. How to use the engine start-stop technology:

1。Engine start-stop means that the engine automatically shuts down when the vehicle is temporarily stopped during driving (such as waiting for a red light). A system that automatically restarts the engine when it is necessary to move on; 2.

The method used only requires direct pressing of the brake pedal while driving. After about two seconds of complete stopping of the vehicle, the engine will automatically turn off. If you keep pressing the brake megadenier pedal, the engine will remain off.

3.As soon as you release the brakes or operate the steering wheel, the engine will automatically ignite and start immediately when you press the accelerator. The whole process is basically in the state of holding the D gear.

To put it simply, automatic start-stop is a system that can automatically control the engine to turn off and ignition, and in the case of a short stop, the engine will automatically "sleep", which is mainly suitable for waiting for traffic lights or traffic jams in urban traffic. When the engine is turned off, the power supply can also replace the pulley to provide power for the engine cooling fan and the air conditioner in the car. In order to achieve the purpose of fuel saving and emission reduction.

But with such a good feature, it also has drawbacks.

1. Avoid using the start-stop system in the case of ramps.

Temporary parking on the ramp, the start-stop system should be avoided as much as possible. The start-stop system starts slowly, and it is easy to cause the vehicle to slide when the brake is released, and the engine is too late to catch fire, and the power is insufficient, resulting in danger.

2. Irregular stop-and-go shutdown start-stop system.

Originally, the traffic jam was a disturbing thing, and the stop-and-go frustration was even more disturbing. Turning off the starting system to improve ride comfort is more important than reducing that little bit of fuel consumption, and at the same time stop and start again, obviously the starting speed difference is one section, and then. Inserted again.

3. Do not use the start-stop system as much as possible when turning on the air conditioner.

The vehicle is equipped with air conditioning to increase the ride comfort, but most cars with a start-stop system will only supply air and not cool when the engine is turned off (the heating adopts the temperature of the vehicle water tank), which greatly affects the ride comfort. At the same time, if it detects that the temperature in the car is too different from the set value, the engine will start automatically. Frequent starting vibrations greatly reduce the ride comfort.

4. When wading in water, the start-stop system must be turned off, it must be closed, it must be closed, and important things must be said three times.

When passing through waterlogged sections, it is important to turn off the start-stop system, as the engine stalls and the exhaust pressure suddenly decreases if you need to stop while driving. Water can easily flow backwards from the exhaust pipe into the engine, causing the engine to fail to start.

He can turn off the engine when he stops to reduce emissions.

You can choose to turn it on. Automatic start-stop is to let the car automatically turn off when it stops temporarily after driving a certain distance, and then automatically ignite when it starts. Automatic start-stop does not cause wear and tear on the car.

Because the engine is lubricated with organic oil, and at the same time, the temperature and run-in of the car have reached a better state after driving for a certain distance, and the oil has strong fluidity and high lubrication. Don't worry about wear and tear.

In general, when starting a car at a low temperature, it will cause wear and tear. Because at low temperatures, the oil lubrication in the engine is not very good. After normal driving, the loss of the engine does not even reach 20%.

In addition to making it convenient for car owners, automatic start-stop can also reduce emissions, save fuel, and contribute to environmental protection.

Automatic start and stop back in the last century ( check transaction price |Model Details) In the mid-seventies, pants were already out of order. At that time, Toyota conducted a practical test of this technology on the crown car, as long as the vehicle stopped for a second, the engine would automatically shut off the fuel and turn off, and this became the prototype of the theory and design of automatic start-stop development in the future.

For a car equipped with automatic start-stop function, the engine is used 400,000 times, which means that it can be used for an average of 50 times a day, and it can also be used for 21 years, which can have the same life as the vehicle.

Photo by Brother Choosing a Car) @2019

Yes, engine start-stop technology was born to improve fuel economy. The working principle of automatic engine start and stop is that when the vehicle stops temporarily during driving (such as waiting for a red light), it will automatically turn off the engine when it is in motion. When it's time to move on, the system automatically restarts the engine.

It can reduce unnecessary fuel consumption, lower emissions and improve fuel economy.

Precautions for the use of automatic engine start and stop:

1. When there is a traffic jam, it is necessary to close the start and stop

The stop-and-go road conditions are really not suitable for opening the automatic start-stop, not to mention the engine shake caused by starting, it can also be ignored in terms of fuel-saving effect, because repeated start-stop not only increases fuel consumption, but also increases the burden on the engine, which makes the engine automatic start-stop technology deficit for fuel saving a little embarrassing.

2. The uphill and downhill slopes need to be closed and stopped

If the vehicle is driving on a ramp, try not to turn on the automatic start-stop because although the automatic start-stop time is very short, the start-stop of the engine on the ramp may cause insufficient braking assistance of the vehicle.

3. The air conditioner needs to be turned off and started and stopped when refrigerating

Because the air conditioner requires a relatively large power consumption, and the power of the body may not be enough to drive the air conditioner in the case of engine shutdown, it will make the passengers in the car feel uncomfortable.

4. Close the start and stop when wading.

When the vehicle wades in the water, the speed is relatively low, at this time, once the brakes are stepped on, the automatic start and stop will intervene, and the engine will stop working blindly, then the exhaust pipe is negative atmospheric pressure at this time, which will cause water to flow into the exhaust pipe, if it starts again, the engine is not far from scrapping, and the gains outweigh the losses.

Photo by Liao Wei) @2019

To turn off the auto-start-stop is just to find its switch, the symbol is usually a capital letter A with an arrow ring around it. Just press the button to deactivate the automatic start-stop, and the opposite is so stupid. Just remember that most cars will use automatic start-stop by default, so if you want it to be turned off all the time, just remember to turn it off before every drive.

The automatic start-stop function of the engine can be seen in many cars, and the application is also very extensive, after turning on the automatic start-stop, press the brake pedal a little harder, the engine will turn off, and then step on the brake, the engine will start, so as to achieve the purpose of fuel-saving answer.